Thanks Silver in the event log I see the following. In the "application" tab, Source >MsiInstaller, Category >none, "Event" tab >1107 and "User" tab >n/a, and latest time log is source=usernv, cat= none, event=1517 and user=system. In "System" tab source = unlocker4, category =none, event=54 and user=n/a. Well I am not sure of what it mean by that as I am not technical to it and I hope it give some clue to it. My OS is windows xp pro 1G.Hz. P3. 524 RAM. I do not know what other things to state for you please ask if required. Thanks and hoping to hear from you.